Write a 500-word composition on protecting nature.

Whenever I sit in a classroom with clean windows, stroll by the clear lake in Kagami Akira, and on the grass-shaded football field, I feel very comfortable.

But a crisis that has been lurking around us for a long time is slowly erupting, and maybe one day this beautiful scenery will leave us. All this is caused by human beings. The key to the gate of heaven and the key to the gate of hell are in human hands. We middle school students should consciously fulfill the responsibility of protecting the environment, improve environmental awareness, strengthen the concept of legal system, and implement environmental protection actions. Be a "little guardian of civilization".

Our earth is a beautiful planet. However, soil erosion and desertification continue to plague mankind. Are madly devouring the land on which people live. According to statistics, the deserts and wasteland on the earth are expanding at a rate of 27 million hectares per year, and the desertified land in China is also expanding at an area of 1.560 square kilometers per year. At present, China has 1.28 million square kilometers of land desertification, and almost 1.5 million square kilometers of land has potential desertification. Desertification has become the most serious problem endangering the global environment.

I once read a cartoon with profound meaning. On the picture, two cars are driving in tandem, and the people in the front car are beating gongs and drums. It is written in red paper: Good news, the chemical plant has increased production, with an output value of 30,000 yuan. The man in the back car frowned. On a piece of paper, they wrote: Report your worries. Due to the pollution of the chemical plant, the grain output was reduced by 300,000 Jin, and the nearby residents were seriously damaged, and several surrounding rivers could not be used. The court ordered it to rectify within a time limit and fined it. Obviously, whoever is happy is worried. These are all warnings from nature, reminding us not to forget the severe punishment and painful lessons of nature. This also reminds us that we must protect the environment in the future.

Environmental pollution will be harmful to our body and mind. In order to protect our health, we need our society to improve and strengthen our understanding of environmental protection. The earth is our mother. We shouldn't discharge a lot of sewage into its blood vessels and bury a lot of garbage in its body. The earth is not a dump. Don't spit in public places, throw scraps of paper, cigarette butts and other sundry, and don't pay attention to environmental protection. Let chewing gum cover it with black spots and throw plastic bags everywhere, causing "white pollution" and making it barren, filthy and muddy everywhere. These actions completely violate socialist spiritual civilization and social morality.

The knife cuts bread and fingers. It takes a person who tied the bell to untie the bell. If humans can make up for it in time, they can protect trees; Save water; Reduce environmental pollution caused by waste water and waste gas discharge. We middle school students should take an active part in public welfare work, so that we can protect the living environment, first make our campus clean, and then contribute to the cleanliness of the city. Friends, give a love and effort! We must start from ourselves, from the small things around us, and protect our living environment through our own actions. We cannot make the mistake of destroying the ecological environment again.

We are citizens of the motherland and masters of the 2 1 century, so we have responsibilities to the motherland and mankind. Society is our home, and the quality of social members directly reflects the atmosphere of the whole society. The Chinese nation has a civilization history of 5,000 years. As a country of etiquette, it is our traditional virtue to stress public morality. As a member of society, it is our responsibility to carry forward this traditional virtue. Strengthen social morality, and society needs social morality. We can't be informal. Morality and order are the foundation of social harmony. The good civilized habit of "moral cultivation" comes from the cultivation of good moral quality. Only when you are young, you should always "think for others", pay attention to civilization, keep order and form good habits, and you can be polite when you grow up.

It is never too late to mend. We want to sound the alarm to everyone, and we shout loudly that we only have one earth! We must protect our home. From now on, we should take immediate action to control pollution, green the environment and prevent the tragedy of pollution from happening again. Strive to be a "small guardian of civilization."

Component 2:

I love the earth and the home where we live. Love her mountains and waters, love her green grass and blue sky. ...

I played and laughed with butterflies among the fragrant flowers in the four fields; In the lush forest, I chase and sing with birds; Early in the morning, I went for an outing in Yuan Ye with light steps. The mist filled the air, like a piece of white gauze floating gently in the air. Sucking the flowers and enjoying the sunshine bath, I am intoxicated in this ecstatic dream; In the evening, I sat in a farmhouse with fragrant rice, looking up at the bright stars and listening to cicadas and frogs, as if I were in a fairy tale kingdom. In spring, I sit on the back of a cow and listen to the pastoral melody and melodious flute on the endless grassland. In summer, I sat in a boat, paddled the green lake, and watched the seagulls skim across the vast lake lightly; In autumn, I stand under the tree, expecting the golden leaves to fall one by one; In winter, I stand at the window and admire the snowflakes flying in the air. My heart is drunk in this picturesque fairyland!

Once upon a time, people hacked and hacked, destroying the ecological balance of nature. Dunes have swallowed up thousands of hectares of fertile land, floods have destroyed lovely homes, and nature's revenge has embarrassed mankind. Meishuixi once said that there would be no human beings without nature, which is the simplest truth in the world. Blindly plundering and conquering nature will only destroy the ecosystem and bring mankind to the brink of difficulties. This sentence is absolutely true. People don't give face to nature, and nature certainly won't give people a way back. In fact, the flood in 1998 and the sandstorm in 2000 were both warnings issued by nature to human beings.

Once upon a time, people arrested and killed indiscriminately, which made human friends suffer greatly. "There are no birds in a hundred mountains, and there are no footprints in a thousand paths", which is the truest portrayal of the consequences of killing animals. From the bear injury of college students to the crazy hunting of fools, will humans also point their guns at themselves? Remember, protecting animals means protecting ourselves.

Once upon a time, the outbreak of war left our planet devastated. Although the mushroom cloud over Hiroshima and Nagasaki has dissipated for more than half a century, it is still barren. Therefore, peace is an important prerequisite for environmental protection of all mankind.

I can't imagine how miserable the world will be if we continue like this. Nothing grows on the ground, the sky is full of dust, and human beings will become piles of bones in the scream of the devil. At that time, we could only say that man once belonged to the earth, but the earth will never belong to man again.

Gu once said that every man is responsible for the rise and fall of the world. The historical responsibility of protecting the environment and maintaining ecological balance should fall on our cross-century generation. Let's all care about nature, love the earth, hand in hand, shoulder to shoulder, heart to heart, and build a green levee to defend resources, environment, the earth and our beautiful home!